Jenna Fischer says one famous friend provided much-needed levity during her illness.

The Office actor recently disclosed her private year-long experience with breast cancer and, in a continued effort to raise awareness about lifesaving mammograms, is opening up about beating it and named the first celebrity she called after her diagnosis.

I called [Christina Applegate ], and she answered the phone, and she said, Which one is it? Fischer told Hoda Kotb in an exclusive TODAY show interview published Monday . And I said, Its breast cancer. And she said, I effing knew it.

Shes salty, the actor continued about her former co-star. Salty language. I love her for it.

Applegate not only starred opposite Fischer in 2011s Hall Pass , but had been diagnosed with breast cancer herself in 2008, allowing her to relate to Fischer and put her in touch with fellow survivors. Fischer said Monday that they took her journey together.

Fischer only recently publicly announced her diagnosis, however, in an Instagram post for National Breast Cancer Awareness Month. The actor said Monday that, after going in for a routine mammogram last October that shed been putting off, there were a few spots.

Fischer said the dense tissue in her breasts yielded inconclusive results, leading to an advised ultrasound and a later biopsy that determined a 10% chance its cancerous. She recalled being on a hike when an email confirmed her Stage 1 ductal carcinoma.

I think the word that really got to me was when we found out that I was triple-positive and my oncologist said chemotherapy, the mother of two told Kotb, adding that she was in disbelief at the diagnosis. That was when I really lost it.